All data files are tab-delimited text files, with LF as line terminator. 80_PI.txt All polymorphism in 80 accessions 80_N.txt Non-synonymous polymorphism in 80 accessions 80_S.txt Synonymous polymorphism in 80 accessions 65_PI.txt All polymorphism in 65 accessions 65_N.txt Non-synonymous polymorphism in 65 accessions 65_S.txt Synonymous polymorphism in 65 accessions In each file, rows represent genes and columns represent attributes of genes. Below are details of columns: Duplication.Status Categorical predictor variable (Table S1). Gene Gene Name. Chromosome Categorical predictor variable. data.log$PI Pi: Continuous response variable, log transformed. Only exist in files 80_PI.txt and 65_PI.txt data.log$dNmean PiN: Continuous response variable, log transformed. Only exist in files 80_N.txt and 65_N.txt data.log$dSmean PiS: Continuous response variable, log transformed. Only exist in files 80_S.txt and 65_S.txt data.log$dSM Continuous predictor variable, log transformed (Table S1). data.log$Expression.Level Continuous predictor variable, log transformed (Table S1). data.log$Tissue.Specificity Continuous predictor variable, log transformed (Table S1). data.log$Fop Continuous predictor variable, log transformed (Table S1). data.log$Multifunctionality Continuous predictor variable, log transformed (Table S1). data.log$Recombination.rate Continuous predictor variable, log transformed (Table S1). data.log$Chromosome.position Continuous predictor variable, log transformed (Table S1). data.log$GC.Content Continuous predictor variable, log transformed (Table S1). data.log$X5.UTR.Length Continuous predictor variable, log transformed (Table S1). data.log$X3.UTR.Length Continuous predictor variable, log transformed (Table S1). data.log$CDS.Length Continuous predictor variable, log transformed. data.log$Intron.Number Continuous predictor variable, log transformed (Table S1). data.log$Average.Intron.Length Continuous predictor variable, log transformed (Table S1). data.log$ENV_all Continuous predictor variable, log transformed. Environmental relevance from all environmental variables (Table S2). data.log$ENV_alt Continuous predictor variable, log transformed. Environmental relevance from altitude (Table S2). data.log$ENV_temp Continuous predictor variable, log transformed. Environmental relevance from temperature (Table S2). data.log$ENV_temp.var Continuous predictor variable, log transformed. Environmental relevance from variation in temperature (Table S2). data.log$ENV_prec Continuous predictor variable, log transformed. Environmental relevance from precipitation (Table S2). data.log$ENV_prec.var Continuous predictor variable, log transformed. Environmental relevance from variation in precipitation (Table S2). data.log$ENV_temp.by.prec Continuous predictor variable, log transformed. Environmental relevance from temperature by precipitation interaction (Table S2).